Design Pattern in Java
The Singleton pattern is often used in situations where having multiple instances of a class could cause problems, such as managing shared resources, coordinating access to a centralized database, or controlling access to hardware devices..
How does Singleton design pattern work?
Singleton pattern restricts the instantiation of a class and ensures that only one instance of the class exists in the Java Virtual Machine.
The singleton class must provide a global access point to get the instance of the class.
Singleton pattern is used for logging, drivers objects, caching, and thread pool.Aug 3, 2022.
Interesting design patterns
For example, the singleton pattern can help a printer print documents in a certain order to avoid deadlock situations.
In the case of logging data to a file, we may have multiple clients logging to a single file at the same time.
The singleton pattern can help prevent problems with concurrent access to this log file..
Is Singleton a good design pattern?
One of the main benefits of the Singleton pattern is that it ensures that there is only one instance of a class, and it can be easily accessed from anywhere in the application.
This makes it a great pattern for resources that are shared across the entire system, such as a configuration manager or a database connection..
Is singleton design pattern good?
One of the main advantages of using the singleton pattern is that it can reduce the memory usage of your application.
By creating only one instance of a class, you can avoid allocating and deallocating memory for multiple objects of the same type..
What is the design pattern similar to Singleton?
The Monostate Pattern is similar to the Singleton Pattern and quite popular in Python.
While the Singleton Pattern guarantees that only one instance of a class exists, the Monostate Pattern ensures that all instances of a class share the same state..
What is the factory method of Singleton?
Singleton – Ensures that at most only one instance of an object exists throughout application.
Factory Method – Creates objects of several related classes without specifying the exact object to be created.
Abstract Factory – Creates families of related dependent objects..
What type of design pattern is a singleton?
In software engineering, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance..
Why do we use singleton design patterns?
Singleton pattern restricts the instantiation of a class and ensures that only one instance of the class exists in the Java Virtual Machine.
The singleton class must provide a global access point to get the instance of the class.
Singleton pattern is used for logging, drivers objects, caching, and thread pool.Aug 3, 2022.
Why do we use singleton?
Use the Singleton pattern when a class in your program should have just a single instance available to all clients; for example, a single database object shared by different parts of the program.
The Singleton pattern disables all other means of creating objects of a class except for the special creation method..
- Some consider the singleton to be an anti-pattern that introduces global state into an application, often unnecessarily.
This introduces a potential dependency on the singleton by other objects, requiring analysis of implementation details to determine whether a dependency actually exists.